Scriber or marking-awl



(No Model.)

S. B. DERBY.

SGRIBER. 0R MARKING AWL.

No. 366,308. Patented July 12,1887.

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SCOTT B. DERBY, OF UTIOA, NEBRASKA.

SCRIBER OR MARKING-=AWL.

SPECIFICATION forming part of Letters Patent No. 366.308, dated July 12, 1887.

Application filed December 2, 1886. Serial No. 220,499. (No model.)

T0 (1% whom it 77mg concern.-

Be it known that I, SCOTT B. DERBY, a citi- .zen of the United States, residing at Utica, in

the county of Seward and State of Nebraska, have invented certain new and useful Improvements in Scribers or Marking-Awls; and I do declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it punchin appertains to make and use the same.

My inventiourclates to an improvement in scribers or marking-awls used by joiners for making lines on stuff; and it consists in a new and improved reversible scribcr adapted for either cutting or marking, as will be fully understood from the following description and claim, taken in connection with the annexed drawings, in which- Figure 1 is a perspective view of the in proved tool adjusted for cutting lines across the grain of boards or other stuff. Fi g. 2 is a perspective view showing the pointed end of the tool exposed for marking, centering, 01 Fig. 3 shows the handle in section and the scriber held therein by a set-screw.

Referring to the annexed drawings by letter, A designates the body of the improved tool, which may be cylindrical in cross section, or ot'any other suitable shape. One end,

a, of the body A is tapered to form a scribingpoint, which may be used, when secured to ahandle, B, as shown in Fig. 2, for marking lines on surfaces, for making center depressions, for punching holes, and for various purposes where around pointed instrument is required. I

On the opposite end of the body or shank A, I form a cutter, which is especially useful for cutting lines across the grain of wood in the work of joining. This cutter is formed by double'beveling transversely the end of the shank, so as to leave a knife-edge, b, and then double-beveling the end of the shank longitudinally, so as to leave a curved transverse cutting-edge, c, which is peculiarly adapted for marking deep cuts across the grain of stuff,

whether guided or not by a straight-edge or a pattern.

The handle Bis recessed to receive either end of the tool, which is readily secured to it by a set-screw, (1.

Having described my invention, I claim The within-described reversible scribing tool, consisting of a shank provided with a scribing-point on one end and longitudinal and transverse cutting-edges on the opposite end, and adapted to be removably applied to a suitable handle, substantially as. specified.

In testimony whereof I affix my signature in presence of two witnesses.

SCOTT DERBY.

\Vitnesses:

G. A. DERBY, A. T. COUGILL. 

